Bug 2164058
| Summary: | Use the libc native backtrace mechanism exposed in OvS | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux Fast Datapath | Reporter: | Dumitru Ceara <dceara> |
| Component: | ovn23.09 | Assignee: | Ales Musil <amusil> |
| Status: | CLOSED ERRATA | QA Contact: | Jianlin Shi <jishi> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | high | ||
| Version: | FDP 23.A | CC: | amusil, ctrautma, i.maximets, jiji, mmichels |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | ovn23.09-23.09.0-alpha.157.el9fdp | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2024-01-24 11:17:46 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2177760 | ||
| Bug Blocks: | |||
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Description
Dumitru Ceara
2023-01-24 15:54:00 UTC
Hi Ales, what should we do for this bug? ovn23.09 doesn't depend on lib-unwind: [root@kvm-01-guest22 23.09-73]# yum install ovn23.09-* Updating Subscription Management repositories. Unable to read consumer identity This system is not registered with an entitlement server. You can use subscription-manager to register. Last metadata expiration check: 1:28:25 ago on Mon 04 Dec 2023 06:27:50 AM CET. Dependencies resolved. ================================================================================================================================================================================== Package Architecture Version Repository Size ================================================================================================================================================================================== Installing: ovn23.09 x86_64 23.09.0-73.el9fdp @commandline 1.1 M ovn23.09-central x86_64 23.09.0-73.el9fdp @commandline 539 k ovn23.09-host x86_64 23.09.0-73.el9fdp @commandline 683 k Transaction Summary ================================================================================================================================================================================== Install 3 Packages Total size: 2.3 M Installed size: 7.8 M Is this ok [y/N]: [root@kvm-01-guest22 23.09-73]# yum info lib-unwind Updating Subscription Management repositories. Unable to read consumer identity This system is not registered with an entitlement server. You can use subscription-manager to register. Last metadata expiration check: 1:28:41 ago on Mon 04 Dec 2023 06:27:50 AM CET. Error: No matching Packages to list Hi Jianlin, right we are using the libc native mechanism which was exposed via OvS. To check if that works you can kill the process with SIGSEGV e.g. "kill -SIGSEGV $(pidof -s ovn-controller)". After that there should be backtrace in the ovn-controller.log something like the backtrace below: SIGSEGV detected, backtrace: ovn-controller[0x56b1da] ovn-controller[0x49a358] /lib64/libc.so.6(+0x3e9a0)[0x7f5700a339a0] /lib64/libc.so.6(__poll+0x4d)[0x7f5700afcb8d] ovn-controller[0x5126a2] ovn-controller[0x507afa] ovn-controller[0x40a860] /lib64/libc.so.6(+0x2814a)[0x7f5700a1d14a] /lib64/libc.so.6(__libc_start_main+0x8b)[0x7f5700a1d20b] ovn-controller[0x40ced5] tested with following script: systemctl start openvswitch systemctl start ovn-northd ovn-nbctl set-connection ptcp:6641 ovn-sbctl set-connection ptcp:6642 ovs-vsctl set open . external_ids:system-id=hv1 external_ids:ovn-remote=tcp:127.0.0.1:6642 external_ids:ovn-encap-type=geneve external_ids:ovn-encap-ip=127.0.0.1 systemctl restart ovn-controller kill -SIGSEGV $(pidof -s ovn-controller) grep SIGSEGV -A 20 /var/log/ovn/ovn-controller.log result on ovn23.03-23.03.0-106.el9: [root@kvm-01-guest22 bz2164058]# rpm -qa | grep -E "ovn23.03|openvswitch3.1" openvswitch3.1-3.1.0-70.el9fdp.x86_64 ovn23.03-23.03.0-106.el9fdp.x86_64 ovn23.03-central-23.03.0-106.el9fdp.x86_64 ovn23.03-host-23.03.0-106.el9fdp.x86_64 + kill -SIGSEGV 55394 + grep SIGSEGV -A 20 /var/log/ovn/ovn-controller.log result on ovn23.09-23.09.0-73.el9: [root@kvm-01-guest22 bz2164058]# rpm -qa | grep -E "ovn23.09|openvswitch3.1" openvswitch3.1-3.1.0-70.el9fdp.x86_64 ovn23.09-23.09.0-73.el9fdp.x86_64 ovn23.09-central-23.09.0-73.el9fdp.x86_64 ovn23.09-host-23.09.0-73.el9fdp.x86_64 + grep SIGSEGV -A 20 /var/log/ovn/ovn-controller.log SIGSEGV detected, backtrace: ovn-controller(+0xa9b71)[0x563d95a68b71] /lib64/libc.so.6(+0x54db0)[0x7fe377254db0] /lib64/libc.so.6(__poll+0x4f)[0x7fe3773428bf] ovn-controller(+0x111c6d)[0x563d95ad0c6d] ovn-controller(+0xe7d2d)[0x563d95aa6d2d] ovn-controller(+0x253e4)[0x563d959e43e4] /lib64/libc.so.6(+0x3feb0)[0x7fe37723feb0] /lib64/libc.so.6(__libc_start_main+0x80)[0x7fe37723ff60] ovn-controller(+0x290e5)[0x563d959e80e5] 2023-12-05T01:53:53.522Z|00001|fatal_signal(stopwatch1)|WARN|terminating with signal 11 (Segmentation fault) set Verified Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (ovn23.09 bug fix and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2024:0392 |